Lathe-tool



G. W. DOVER. LATHETOOL. APPLICATION rm APR- a. 1920.

Patented Jan. 25, 1921.

UNITED STATES PATENT OFFICE.

GEORGE WILLIAM DOVER, 0F CRANSTON, RHODE ISLAND.

' ATHE-root.

Specification of Letters Patent. Patented Jan. 25, 1921.

I Application filed April 3, 1920. Serial No. 371,096.

To all whom it may concern Be it known that I, Gnoncn WILLIAM DOVER, acitizen of the United States, residing at Cranston, in the county ofProvidence and. State of Rhode Island, have invented a new and usefulImprovement in Lathe.

Tools, of which the following is a specification.

left hand tool and the cutting member al-.

ways has the same required clearance, when in use, either as a right orleft hand tool.

My invention consists in the peculiar and novel construction of a lathetool having an adjustable and detachabie two point cutting member bentat a transverse angle to the holder, for clearance, when used either asa right or left hand tool, said lathe tool having details ofconstruction, as will be more fully set forth hereinafter and claimed.Figure 1 is a side view of my improved lathe tool. Fig. 2 is a top viewof the lathe tool. Fig. 3 is an enlarged transverse sectional 7 viewthrough the lathe tool, taken on line- 3. 3 of Fig. 2, and

Fig. 4 is a perspective view of the cutting member removed from theholder.

In the drawing 5 indicates a holder in the form of a rectangular shapedbar having a sidewise bent end 6 in which is a round transverse taperedhole 7, the face end of which has a circular series of corrugations 8.The holder 5 may be straight if desired.

A rotatable adjusting member 9 has around proximately forty degrees tothe face of the rectangular shaped head 13. A bolt 17 extends throughthe bolt hole 12 and has a screw-threaded end 18 and a rectangularshaped head 19 the forward edge which is formed into an angular inwardlyextending side 20 having an angle of approximately fifty degreesto theface of the rectangular shaped head 19, the side 20 being in oppositelydisposed relation to the side 16 of the groove 14, as shown in Fig. 1.

screw 21 is screw-threaded through the head 19 at one side of the centerof the head and bears against the face of the head 13 and a nut 22 is inscrew-thread engagement with the screw-threaded end 18 of the bolt 17and bears against the bent end 6 of the holder 5. A two point bar shapedcutting member 23 is constructed to have a body portion 24 by which thecutting member is secured by clamping the body portion 24 between theheads 13 and 19, in the V shaped groove 14, and a cutting portion 25bent at a transverse angle to the body portion and. having a cuttingpoint 26 at each end, as shown in Figs. 2 and 4. The cutting portion 25is bent at an angle ofapproximately seventy degrees to the center lineof the bolt 17, for clearance, as shown in Fig. 2. The body portion 24has a flat rear edge 27 which fits against the side 15 of the groove 14,an angular side 28 which fits against the side 16 of the groove 14 andan angular side 29 which fits against the angular side 20 of the head19, when the cutting member is clamped in place, as shown in Fig. 2. Thecutting member tapers gradually from the rear edge 27 to the cuttingedge.

When in use the cutting member 23 is clamped between the heads 13 and19, it may be adjusted up or down and at an angle and by tightening thenut 22, after adjustment, the cutting member is rigidly secured betweenthe clamping heads and is also held from turning by the corrugations 8and 11. By adjusting the screw 21 the angular side 20 of the head 19 maybe adjusted to fit the angular side 29 of the cutting member. Thecutting member lnay be placed at any angle required for lathe or planeruse, the tool may be used either right or left hand and in eitherposition there is always the required clearance of the cutting member.

It is evident that the cutting points of the cutting member could be ofany shape desired and other details of construction could be variedWithin the scope of the depended claims. 7 v

Hu -ring thus'desciibed my invention, claim as new: I i r 1. A lathetool comprising a holding m mber having a round tapered UQIHSVJISG holein one end, corrugations in the face end oi the hole, :2. rotate ieadjusting member having a round tapered gations at the base of the huband engaging the corrugations in the hole, a head having in its face ancenter V shaped QI'OOVQ and a bolt hole extendirg through the hub.

e'boit ey'ctcnding through the bolt hole and a screw threeded ed and ahead an angular forward side, the V groove and the angular iorwnrd sideiuving having shaped ing, it outing member having a body portion withanpular sides which it in and are clamped in the clamping openingbetween hub in the hole, corruforming a cutting member clumping open-,

having a head and an adjusting screw screwthreadetl through the head ofthe bolt, and engaging with the head of the adjusting member for the lurgose as described.

In. a let 1e tool according to claim 1 the cutting member having" a bodyportion with angular sides and a cutting portion bent at a. transverseangle to the body portion and having it cutting point at each end, thecutting member tapering gjrmluz from its rear edgeto its cutting edge,as described.

in testimony vfliereof l have 5' name to this specification.

ononon WILLIAM novice.

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